Product Overview

Single Pressure Switches
PRESSURE
93
Compressor Pressure Switch
Adjustable Set Point and Deadband, 20 Amp Rating
Series
CX
The Series CX Compressor Pressure Switches are designed with a 20 amp normally
closed SPST switch for direct control of pumps and motors. The set point and deadband
are both easily adjustable via screw terminals inside the cover. For ease of installation, the
switches come with a 1/4˝ female NPT process connection or the optional 4-port connection
block on the CX-4 models. Besides making installation easier, one of the other ports can be
used to install a pressure gage. Plus, these switches can be mounted in any orientation.
These units are perfect for regulating tank pressure on small air compressors. The CX
series switches come with an unloader valve, which prevents compressors from starting
under load. They also come with an auto/off disconnect lever for manually cutting off the
load. When the lever is in the off position, there is a test button inside the housing that can
be pushed to turn on the load.
SPECIFICATIONS
Service: Air and non-combustible
compatible gases.
Wetted Materials: NBR (Nitrile-
Butadiene) rubber diaphragm, steel
connection (CX-1), aluminum alloy
connection (CX-4).
Temperature Limits: 140°F (60°C).
Pressure Limits: See model chart.
Enclosure Rating: General purpose.
Repeatability: ±5 psig (±0.3 bar).
Switch Type: 2 each SPST snap
action, normally closed (NC).
Electrical Ratings: 20 A @ 120 VAC,
12 A @ 240 VAC, 9.6 A @ 240 VAC (3
phase), 8.6 A @ 32 VDC, 3.1 A @ 120
VDC, 1.6 A @ 240 VDC. 1.5 HP @ 120
VAC, 2 HP @ 240 VAC, 3 HP @ 240
VAC (3 phase), 0.25 HP @ 32/120/240
VDC.
Electrical Connections: Screw
terminal.
Conduit Connection: 7/8˝ hole for 1/2˝
conduit hub (2 places).
Process Connection: 1/4˝ female
NPT (CX-4: 4 places).
Mounting Orientation: Switch can be
installed in any position.
Setpoint Adjustment: Internal screws.
Weight: CX-1: 0.78 lb (0.35 kg); CX-4:
1.03 lb (0.47 kg).
Deadband: See model chart.
Agency Approvals: CE.
.236
[Ø6.00]
OR
Ø.250
[Ø6.35]
3-35/64
[90]
3-45/64
[94]
2-17/64
[57.6]
3-3/8
[85.5]
Ø.236
[Ø6.00]
OR
Ø.250
[Ø6.35]
3-35/64
[90]
3-45/64
[94]
3-45/64
[94]
1-27/64
[36]
2-17/64
[57.5]
CX-1
CX-4
CX-1 CX-4
Approx. Adjustable
Deadband psig (bar)
20-30 (1.4-2.1)
30-40 (2.1-2.8)
35-55 (2.4-3.8)
20-30 (1.4-2.1)
30-40 (2.1-2.8)
35-55 (2.4-3.8)
Model
CX-11
CX-12
CX-13
CX-41
CX-42
CX-43
Range
psig (bar)
25-100 (1.7-6.9)
35-150 (2.4-10.3)
50-175 (3.4-12.1)
25-100 (1.7-6.9)
35-150 (2.4-10.3)
50-175 (3.4-12.1)
Number
of Ports
1
1
1
4
4
4
Series
CS & CD
Diaphragm Pressure Switches
Visible Set Points, Fixed or Adjustable Deadband
11/16
[17.46]
1-1/16
[26.99]
3
[76.20]
3-3/4
[95.25]
3-3/16 [80.96]
1-5/16
[33.34]
2-3/16
[55.56]
3
[76.20]
3-3/4
[95.25]
1/4 NPT
1/2 [12.7]
CONDUIT HOLE
Model
CS-1
CS-3
CS-10
CS-30
CS-150
CD-10
CD-30
CD-150
Adjustable Operating Range
1-30˝ Hg. Vac. (25.4-762 mm Hg)
1-100 in w.c. (.25-24.9 kPa)
1-10 psig (.07-.69 bar)
1-30 psig (.07-2.1 bar)
10-150 psig (.69-10.3 bar)
1-10 psig (.07-.69 bar)
1-30 psig (.07-2.1 bar)
10-150 psig (.69-10.3 bar)
Deadband Value
1.5˝ Hg. (38 mm Hg)
7 in w.c. (1.74 kPa)
0.4 psig (0.03 bar)
1.0 psig (0.07 bar)
5 psig (0.35 bar)
Min: 1.5 psig (.1 bar),
Max: 11.5 psig (.79 bar)
Min: 2 psig (.14 bar),
Max: 12 psig (.83 bar)
Min: 14 psig (.97 bar),
Max: 24 psig (1.7 bar)
SPECIFICATIONS
Wetted Materials: Nylon reinforced Buna-N and steel.
Temperature Limits: -30 to 150°F (-35 to 66°C).
Pressure Limit: 30 psig (2.1 bar) for ranges 1, 3, and 10; 50 psig (3.5 bar) for
range 30; 175 psig (12.1 bar) for range 150.
Enclosure Rating: General purpose.
Switch Type: SPDT snap switch.
Electrical Rating: 15 A @ 120 VAC, 8 A @ 240 VAC.
Electrical Connections: Screw terminal.
Conduit Connection: 1/2˝ hole for conduit hub.
Process Connection: 1/4˝ female NPT.
Mounting Orientation: Any position.
Set Point Adjustment: Internal screw.
Weight: .5 lb (0.23 kg).
Deadband: See model chart.
Agency Approvals: CE, UL.
Series CS and CD combine advanced design and precision construction in a small size.
Unit is ideal for instrument panels, small compressors and general industrial applications.
Visible set point and easy to wire SPDT snap switch reduce installation time. Operates in any
position and is vibration resistant.
Deadband
Fixed
Fixed
Fixed
Fixed
Fixed
Adjustable
Adjustable
Adjustable
CONTACT US | U.S. 219/879-8000 | U.K. (+44) (0)1494-461707 | A.U. (+61) (0) 2 4272 2055 | China [phone]
Max.Pressure
psig (bar)
129 (8.9)
179 (12.3)
204 (14.1)
129 (8.9)
179 (12.3)
204 (14.1)
093_Layout 1 7/8/14 10:12 AM Page 93